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Subtract 5/7 from 7/9

7/9 - 5/7 is 4/63.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 9 and 7 is 63

    Next, find the equivalent fraction of both fractional numbers with denominator 63
  2. For the 1st fraction, since 9 × 7 = 63,
    7/9 = 7 × 7/9 × 7 = 49/63
  3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
    5/7 = 5 × 9/7 × 9 = 45/63
  4. Subtract the two like fractions:
    49/63 - 45/63 = 49 - 45/63 = 4/63

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